Himanshu Dixit
@himanshudixit1
Encryption & PKI Security Engineer automating certificate lifecycle to prevent outages and strengthen security.
IndiaWhat I'm looking for
I’m an Encryption & PKI Security Engineer with 3+ years of experience securing enterprise environments through certificate lifecycle management, encryption, and Public Key Infrastructure (PKI). I’ve handled end-to-end certificate operations across DigiCert Trust Lifecycle Manager and Sectigo, including issuance, renewal, revocation, and application onboarding.
I led automation of end-user certificate renewal using PowerShell integrated with Power Automate and Power Apps. This enabled end users to renew workstation certificates directly—reducing manual renewal requests through application servers and cutting certificate-related outages.
I also manage certificate and secrets storage using Azure Key Vault and HashiCorp Vault, integrating applications for automated certificate retrieval and rotation. On top of that, I’ve driven PKI migration projects from DigiCert to Sectigo with inventory, re-issuance planning, and cutover validation aimed at zero service disruption.
Beyond PKI, I remediate SSL/TLS vulnerabilities and legacy protocol weaknesses (RC4, DES, 3DES), and support Linux/Unix and Windows environments. I bring strong incident/change/problem management discipline from SLA-driven 24x7 production support, with thorough SOP and KB documentation to improve handoffs and reduce repeat issues.
Experience
Work history, roles, and key accomplishments
Owned end-to-end certificate lifecycle management across DigiCert Trust Lifecycle Manager and Sectigo, including issuance, renewal, revocation, and application onboarding. Built an automated certificate renewal workflow with PowerShell integrated into Power Automate/Power Apps and managed certificate/secret storage via Azure Key Vault and HashiCorp Vault.
Delivered IAM and IGA operations across Microsoft Entra ID, SailPoint IIQ/IDN, and One Identity Manager, supporting SSO integrations and authentication troubleshooting. Provided L2/L3 support for MFA, Conditional Access, RBAC, identity synchronization, and managed Zscaler and Microsoft 365 Email Security operations.
Performed data-driven analysis and reporting using Excel and Python to support content strategies and improve user engagement. Contributed to tooling improvements to streamline operations and improve data processing quality.
Azure Cloud Engineer Apprenticeship
Hanu Software
Sep 2022 - Nov 2022 (2 months)
Implemented Azure data engineering solutions focused on data quality and pipeline efficiency for data storage and processing. Developed and deployed ETL processes and data storage solutions to meet project performance and quality KPIs.
Analyzed large text and numerical datasets supporting a high-accuracy ML model for B2B invoice management while ensuring data quality and confidentiality compliance.
Education
Degrees, certifications, and relevant coursework
Lovely Professional University
Bachelor of Technology, Computer Science Engineering
2019 - 2023
Grade: CGPA/Percentage: 84.2%
Bachelor of Technology in Computer Science Engineering at Lovely Professional University (2019–2023), achieving 84.2%.
Tech stack
Software and tools used professionally
Availability
Location
IndiaAuthorized to work in
Salary expectations
Social media
Skills
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